85980347 has 2 divisors, whose sum is σ = 85980348. Its totient is φ = 85980346.

The previous prime is 85980317. The next prime is 85980353. The reversal of 85980347 is 74308958.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85980347 - 2¹² = 85976251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85980298 and 85980307.

It is not a weakly prime, because it can be changed into another prime (85980317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42990173 + 42990174.

It is an arithmetic number, because the mean of its divisors is an integer number (42990174).

Almost surely, 2^85980347 is an apocalyptic number.

85980347 is a deficient number, since it is larger than the sum of its proper divisors (1).

85980347 is an equidigital number, since it uses as much as digits as its factorization.

85980347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 85980347 is about 9272.5588162060. The cubic root of 85980347 is about 441.3668702565.

The spelling of 85980347 in words is "eighty-five million, nine hundred eighty thousand, three hundred forty-seven".